389 results about "N-Propanol" patented technology

The invention provides a method for preparing normal propyl alcohol by glycerol hydrogenation, wherein glycerite or biodiesel byproduct glycerol which is diluted by glycerol or solvent reacting with hydrogen or gaseous mixture containing hydrogen to generatenormal propyl alcohol, which provides a new way for synthesizing normal propyl alcohol. The present invention can enhance activity of glycerol hydrogenation and selectively generates normal propyl alcohol, also can make normal propyl alcohol united generating with 1,2-propanediol, ethandiol, methylic alcohol and ethyl hydrate, thus its product process program is very flexible. The present invention is characterized in that its technological condition is geniality, raw material is cheap and can be obtained easily and the cost of manufacture is low, which belongs to environment friendly green chemical industry technique.

An exemplary printable composition of a liquid or gel suspension of diodes comprises a plurality of diodes, a first solvent and/or a viscosity modifier. In other exemplary embodiments a second solvent is also included, and the composition has a viscosity substantially between about 100 cps and about 25,000 cps at about 25° C. In an exemplary embodiment, a composition comprises: a plurality of diodes or other two-terminal integrated circuits; one or more solvents comprising about 15% to 99.9% of any of N-propanol, isopropanol, dipropylene glycol, diethylene glycol, propylene glycol, 1-methoxy-2-propanol, N-octanol, ethanol, tetrahydrofurfuryl alcohol, cyclohexanol, and mixtures thereof; a viscosity modifier comprising about 0.10% to 2.5% methoxy propyl methylcellulose resin or hydroxy propyl methylcellulose resin or mixtures thereof; and about 0.01% to 2.5% of a plurality of substantially optically transparent and chemically inert particles having a range of sizes between about 10 to about 50 microns.

The invention provides a method of improving luminous efficiency of a rare earth-doped up-conversion luminescence nanometer material through changing the usage of a ligand. According to the method, the synthesis adopts a hydrothermal-solvothermal method, an organic ligand is an organic compound such as monocarboxylic acid, dicarboxylic acid or polycarboxylic acid, and amine, the molar ratio of rare earth ions to the ligand is 2:1-1:100, the molar ratio of NaOH to the ligand is 0:1-1:1, water/alcohol, water/n-propanol alcohol, water/isopropyl alcohol, water/n-butyl alcohol, water/acetone or water/ethylene glycol is used as a solvent, the temperature ranges from 180-240 DEG C, the reaction time is 2-24h, and the F<->/Re value ranges from 4-12. With the method, the problems of selecting various ligands for synthesizing the up-conversion luminescence nanometer material, improving the luminous efficiency of the rare earth-doped up-conversion luminescence nanometer material, synthesizing the water-soluble up-conversion luminescence nanometer material, and the like can be mainly solved.

Aqueous hard surface treatment compositions necessarily comprise an alcohol constituent selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, n-butanol, benzyl alcohol, and mixtures thereof which alcohol constituent comprises from about 40 and 70 weight percent (“% wt”) of the total weight of the composition of which it forms a part. Preferably however the alcohol constituent is present in an amount of from about 50% wt to about 70% wt, more preferably is present in amounts of from about 60% wt to about 70% wt.

The invention relates to a separation and recovery method of organic matters in high-temperature Fischer-Tropsch synthesis reaction water. The method comprises steps of: (1) separating and recoverying aldehyde after rectifying and removing organic acid; (2) rectifying and separating ketone/n-propanol; (3) rectifying and separating acetone/butanone; (4) refining acetone; (5) extracting and separating butanone/ethanol; (6) rectifying and separating ethanol/n-propanol; further rectifying alcohol-containing aqueous sollution obatained from the bottom of a column for rectifying and separating ketone/n-propanol, ethanol containing little water and obtained from the top of the column, and n-propanol alcohol-containing aqueous sollution obatained from the bottom of the column; (7) azeotropic rectifying ethanol sollution obtained by exaction and separation, and ethanol sollution with n-propanol separated to prepare anhydrous ethanol; (8) adding calces in n-propanol aqueous sollution, distilling to obtain n-propanol products; the invention effectively and orderly separates and recoveries aldehyde, acetone, butanone, ethanol and n-propanol, the purity of each product is above 95% and the yield is above 90%.

The invention relates to a separating method of an aqueous phase byproduct from Fischer-Tropsch synthesis and mainly aims at solving the problem that the direct discharge of the aqueous phase byproduct of Fischer-Tropsch synthesis at present is not economical and pollutes the environment. The method adopts the following steps: the aqueous phase byproduct enters the middle part of a common rectifying tower 1, a distillate stream I with the boiling range of 50-120 DEG C is extracted at a lateral line, a light component with a boiling range of less than 40 DEG C is obtained at the top of the tower, and a heavy component with the boiling range of more than 120 DEG C is obtained at a kettle of the tower; and the lateral line distillate is rectified and separated by an isolating tower 2, a co-boiling rectifying tower 3, an acetic acid extraction tower 4 and an extractant recovering tower 5 so as to obtain methanol-acetone solution, ethanol, n-propanol and a basic organic raw material of acetic acid, and such a technical scheme better solves the problem and can be used in the industrial production for treating the aqueous phase byproduct from the Fischer-Tropsch synthesis.

The invention relates to an alcoholic drink storage utensil and a preparation method thereof. The alcoholic drink storage utensil is a ceramic product having an alcoholic drink alcoholization function and is composed of purple sand, an alcoholic drink purifying solvent, an energy activator and an environment-imitating solvent, wherein the purple sand accounts for 70-80% of the raw materials, the alcoholic drink purifying solvent accounts for 5-20% of the raw materials s, the energy activator accounts for 5-20% of the raw materials s, and the environment-imitating solvent accounts for 2-6% of the raw materials. The alcoholic drink purifying solvent contains major elements of potassium, sodium, calcium, magnesium and phosphorus and further contains zinc, iron, selenium, copper, strontium, iodine, fluorine and metasilicic acid; the energy activator can be tourmalinite or negative ion powder or a mixture of the tourmalinite and the negative ion powder; the environment-imitating solvent is diatomite. The function of the ceramic products is that parameters such as acetaldehyde, methanol, n-propanol, sec-butyl alcohol, isobutanol, n-butanol and isoamyl alcohol, and the like can be reduced to a different degree; parameters such as ethyl acetate, ethyl butyrate, ethyl lactate and ethyl caproate, and the like can be raised to different degrees. According to the invention, the alcoholic drink has good shade, virgin whiteness, no thickness, no pungent smell and no other off-flavors.

This invention relates to a powder for oral suspension, and an oral suspension made therefrom, which comprises a n-propanol solvate of non-dihydrate azithromycin and an azithromycin conversion stabilizing excipient, wherein said excipient reduces the conversion of the form of azithromycin, when placed in suspension, to another form of azithromycin.

This invention also relates to an oral suspension which comprises a n-propanol solvate of non-dihydrate azithromycin and an aqueous vehicle.

The invention relates to a support type ultrathin two-dimensional layered MOF film and a preparation method thereof. The preparation method comprises the steps of: (1) mixing a two-dimensional layered MOF material, anhydrous methanol and n-propanol in a mass ratio of 1:2000-5000:0-3000, then performing ball milling treatment at a speed of 30-200rpm for 30-200min; (2) standing the mixture obtained in step (1) for 4h-30d; and (3) under the condition of 20-200DEG C, dripping an upper solution obtained in step (2) to a porous base membrane carrier surface and conducting drying to obtain the product. The preparation method of the support type ultrathin two-dimensional layered MOF film provided by the invention can prepare a highly oriented support film without extra seed preparation and coating process and has high repeatability. The obtained support type ultrathin two-dimensional layered MOF film has excellent gas separation performance and wide application fields.

The invention discloses a headspace gas chromatography method for determining the residual quantity of an organic solvent in a glycine bulk drug. The method is implemented under conditions that a DB-624 capillary column and a hydrogen flame ionization detector are used, sample inlet temperature is 150 DEG C, the detector temperature is 250 DEG C, high purity nitrogen is taken as carrier gas with flow rate being 2.2 mL/min, the split ratio is 10:1, headspace heating temperature is 80 DEG C, and equilibrium time is 35 min; besides, glycine is easily soluble in water and the 12 solvents are soluble in water to a certain degree, so that an aqueous solvent is adopted. The method can be used for simultaneously determining the residual quantity of the 12 organic solvents including methanol, ethanol, acetone, isopropanol, acetonitrile, dichloromethane, n-propanol, ethyl acetate, tetrahydrofuran, cyclohexane, n-butanol and toluene in the glycine bulk drug, has the characteristics of being easyto operate, quick, sensitive and accurate in result, and provides reference for effectively controlling the quality of the glycine raw material and ensuring medication safety.

The invention discloses a preparation method for 1,4-cyclohexane diformic acid (CHDA) and diester thereof. In particular, 2-cyclohexene-1,4-dicarboxylic acid is subjected to catalytic hydrogenation to prepare the CHDA or CHDA diester under the effect of a supported metal catalyst with hydrogen under certain pressure fed, a solvent being polar or non-polar, wherein the polar solvent may be water, methanol, ethanol, n-propanol, isopropanol, n-butanol, glycol dimethyl ether and diethylene glycol dimethyl ether, and the non-polar solvent may be one or more than two selected from n-hexane, n-heptane, n-octane, cyclohexane, benzene and toluene. A metal active component of the supported metal catalyst is non-noble metal and/or noble metal. A carrier of the supported metal catalyst may be one or more than two selected from a carbon carrier, a nano metal oxide, a nano non-metal oxide and a molecular sieve. When the conversion rate of the 2-cyclohexene-1,4-diformic acid is more than 98%, the selectivity of the CHDA or CHDA diester can reach 96%.

The invention belongs to the field of preparation of ultrafine compound powder, and relates to a novel method for preparing a coated type cerium oxide/silicon oxide compounded abrasive. The method comprises the following steps: firstly, using cerium nitrate hexahydrate, acetylacetone, citric acid, n-propanol and anhydrous ethanol as raw materials to prepare a cerium colloidal sol; secondly, steeping silicon oxide powder into the cerium colloidal sol, and keeping stand the mixture after dispersing the mixture through ultrasound and mechanical agitation; and thirdly, using a centrifugal method to separate the silicon oxide of which the surface is coated with the cerium colloidal sol, drying and grinding the silicon oxide in an air drying box, and then calcining the silicon oxide to obtain the coated type cerium oxide/silicon oxide compounded abrasive. The method can further prepare the coated type cerium oxide/silicon oxide compounded abrasive with different particle sizes and coating quantities by preparing the cerium colloidal sols with different cerium ion concentrations and selecting the silicon oxide powder with different particle sizes as an inner core. The method has the advantages of good coating effect, comparatively simple process, and good experimental repeatability. Besides, the method can be applied to preparing coated structure compounded abrasive of which the surface is coated with nanometer cerium oxide particles by using other powder as the inner core.

The invention discloses an additive for improving resisting phase separation performance and a heat value of methanol gasoline. The additive consists of the following raw materials in percentage by weight: 35-45 percent of aliphatic alcohol, 10-20 percent of aliphatic ether, 15-30 percent of aliphatic ester, 5-15 percent of aliphatic acid, 1-5 percent of aliphatic amine and 0.1-3 percent of emulsifier OP, wherein the aliphatic alcohol is one or more of isopropyl alcohol, n-propanol, n-amyl alcohol, isoamyl alcohol and n-butyl alcohol; the aliphatic ether is one or more of ethylene glycol methyl ether, ethylene glycol ethyl ether and ethylene glycol butyl ether; the aliphatic ester is one or more of butyl acetate, n-amyl acetate and isoamyl acetate; the aliphatic acid is oleic acid and/or naphthenic acid; the aliphatic amine is dimethylamine and/or diethylamine; and the emulsifier OP is emulsifier OP-15 and/or emulsifier OP-20. The methanol gasoline in which the additive is added has superior low-temperature resisting phase separation and water resisting phase separation performances and an obviously improved heat value.

The invention discloses an n-propanol refining technology which comprises the following steps of: in a reaction kettle, adjusting the pH value of the n-propanol coarse liquid to 8-10 by adding alkaline liquid into the coarse propanol from an n-propanol reaction process; injecting the adjusted coarse propanol liquid from the reaction kettle into a distillation tower by a pump; controlling the temperature of the tower kettle of the distillation tower to 95-130 DEG C, and controlling the temperature at the tower top to 90-130 DEG C; enabling the steam containing water and propanol obtained from the top of the distillation tower to enter a pervaporation membrane separation unit for dehydration; and further cooling the n-propanol steam obtained from the membrane separation unit by circulating water to obtain the product, and collecting the product.

The present invention relates to a neutral multifunctional paint remover and its preparation method. The composition comprises dichloromethane, absolute methanol, glycol monoethyl ether, n-propanol, liquid paraffin, methyl cellulose, Tx-10 and water, and its preparation method includes the following steps: placing the dichloromethane into a steel container, adding liquid paraffin according to the defined proportion, fully stirring, standing still for 8-12 min, adding absolute methanol, uniformly dissolving, then adding glycol monoethyl ether, n-propanol, methyl cellulose, Tx-10 and water, placing them into a colloid mill and grinding them to obtain colloidal material whose pH is 6.5-7.5 and packaging in container.

The invention relates to a preparation method of a high-grade borate type automobile brake fluid, which comprises a synthesis of polyxinolum and borate as well as blending of the brake fluid. The method is characterized in that n-propanol and epoxypropane are taken as raw materials, a polymerization is generated under the effect of a basic catalyst, and the high polyxinolum with 4-6polymerization degree can be obtained after decolouring, adsorbing, filtering and performing reduced pressure distillation. The method takes high polyxinolum, boric acid and 1,3-propylene glycol as raw materials to synthesize six-membered ring borate with low-viscosity by a two stages esterification method, and the dry equilibrium reflux boiling point and the hydrolytic stability of the brake fluid. The semi-polar boric acid diglyceride is synthesized, and can be used as a basic additive solution to increase the wet equilibrium reflux boiling point of the brake fluid, and can be used with glycerol to prevent the swelling of the rubber. According to the invention, the six-membered ring borate and the boric acid diglyceride are taken as basic liquids, low polyxinolum is taken as a diluent, a proper amount of additive is added, and the high-grade borate type automobile brake fluid can be blended.

The invention provides a removal method for the by-product of propyl propionate generated in the technique of preparing n-propanol with the hydrogenated propionaldehyde, which is characterized in that water is properly supplied to enable the n-propanol, the propyl propionate and the supplied water to reach the three-phase azeotropy when the crude propanol generated from the hydrogenated propionaldehyde is entering a distillation system; and the propyl propionate is removed in a light fraction removal column. The removal method for the by-product of propyl propionate generated in the technique of preparing n-propanol with the hydrogenated propionaldehyde has the advantages that the content of the by-product of propyl propionate generated in the process of preparing n-propanol with the hydrogenated propionaldehyde is effectively reduced; purity of the n-propanol product is greatly improved; the content of n-propanol is improved from original 95% to current more than 99.7%; technological method is simple; and energy consumption is low.